The only thing that was messed up was DNS so if the calls can get to the sipsorcery server at 69.59.142.213 then they will work. Other than that the DNS change has been in place now for over 30 hours so it should be cleared up for most people and for those it hasn't the maximum time a DNS change typically takes to propagate across the internet is 48 hours.

It would seem probable that the issue is related somehow to the recent DNS changes at sipsorcery but the only reason I could think of why is if gotalk rely on an active registration and for some reason your sipsorcery provider entry isn't registering. Try checking it and make sure gotalk is showing up in your list of registered provider bindings.